O'Reilly Automotive (ORLY) is seeing its price fall on above-normal volume today, as 8.8 million shares have moved, or eight times its average daily volume. The stock price has decreased 14.4% to $82.55. The stock has been sinking in the last two months, down $22.95 (-21.8%) from a price of $105.50 on April 30, 2012. The stock has moved down across its 200-day moving average of $90.68 today.

Trading at a volume of 1.2 million, or 2.6 times its average daily volume, Chipotle Mexican Grill (CMG) is down on high volume today. A decrease of 3.8% has brought the stock price to $399.82. The stock has lost momentum over the last three months, losing $18.18 (-4.3%) from $418 on March 30, 2012. The stock has dropped a step closer to its 200-day moving average, sitting just 2.7% above the mark.

AutoZone (AZO) is trading down on above-average volume today, seeing a price drop on a volume of 1.1 million, or 2.5 times its average daily volume. The stock price had dipped 5.1% to $357.33. Shares are down over the last two months as the price has dropped $38.83 (-9.8%) from a price of $396.16 on April 30, 2012. The stock has moved down across its 200-day moving average of $367.24 today.

Genuine Parts (GPC) is trading down on a volume of 1.6 million, or 1.8 times its normal daily volume. Shares are down 3.8% to $57.85. The stock is down over the last two months, having fallen $6.93 (-10.7%) from a price of $64.78 on April 30, 2012. The stock is trading at 93.3% of its 50-day moving average and 93.1% of its 200-day moving average.

Atlantic Power (AT) is seeing its price fall on above-normal volume today, as 4.1 million shares have moved, or 8.7 times its average daily volume. At $12.69, shares are down 4.5%. The stock has been on a downward trajectory over the last two months, dipping $1.59 (-11.1%) from a price of $14.28 on April 30, 2012. The stock is trading at 93.3% of its 50-day moving average and 91.2% of its 200-day moving average.

Campus Crest Communities (CCG) is trading down on a volume of four million, or 17.4 times its average daily volume. The stock is down 5.4% to $10.13. The stock has fallen over the last three months, dropping $1.53 (-13.1%) from $11.66 on March 30, 2012. The stock is trading at 92% of its 50-day moving average and 92.9% of its 200-day moving average.

Sealed Air (SEE) is trading down on a volume of 2.5 million, or 1.6 times its standard daily volume. A decrease of 2% has brought the stock price to $14.97. Over the last three months, the stock has lost $4.34 (-22.5%) from a price of $19.31 on March 30, 2012. The stock is trading at 92.8% of its 50-day moving average and 83.2% of its 200-day moving average.

Quality Systems (QSII) is seeing its price fall on above-normal volume today, as 1.2 million shares have moved, or 1.7 times its average daily volume. The stock price has dropped 5.5% to $24.64. The stock is trading at 84.5% of its 50-day moving average and 67.1% of its 200-day moving average.

Trading at a volume of 533,625, or two times its average daily volume, Monro Muffler Brake (MNRO) is down on high volume today. The stock price is $31.90, reflecting a 4.5% decrease. The stock is down over the last three months, having fallen $9.59 (-23.1%) from $41.49 on March 30, 2012. The stock is trading at 91.1% of its 50-day moving average and 81.2% of its 200-day moving average.